Respuesta:
=(1+3x)(1+3x)
=(1)(1)+(1)(3x)+(3x)(1)+(3x)
=1+3x+3x+9x²
=9x²+6x1
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Respuesta:
=(1+3x)(1+3x)
=(1)(1)+(1)(3x)+(3x)(1)+(3x)
=1+3x+3x+9x²
=9x²+6x1